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Grade 15 Titanium vs. EN 1.6956 Steel

Grade 15 titanium belongs to the titanium alloys classification, while EN 1.6956 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 15 titanium and the bottom bar is EN 1.6956 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
9.6
Fatigue Strength, MPa 290
680
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 340
730
Tensile Strength: Ultimate (UTS), MPa 540
1230
Tensile Strength: Yield (Proof), MPa 430
1120

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
440
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
46
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 37
5.0
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 32
2.2
Embodied Energy, MJ/kg 520
31
Embodied Water, L/kg 210
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
110
Resilience: Unit (Modulus of Resilience), kJ/m3 870
3320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 33
43
Strength to Weight: Bending, points 33
32
Thermal Diffusivity, mm2/s 8.4
12
Thermal Shock Resistance, points 41
36

Alloy Composition


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Carbon (C), % 0 to 0.080
0.28 to 0.38
Chromium (Cr), % 0
1.0 to 1.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
92.4 to 95.3
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0.4 to 0.6
2.9 to 3.8
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.035
Ruthenium (Ru), % 0.040 to 0.060
0
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 98.2 to 99.56
0
Vanadium (V), % 0
0.080 to 0.25
Residuals, % 0 to 0.4
0